481 results about "Feed pump" patented technology

The invention discloses a continuous kettle type nitromethane production process, and relates to the technical field of basic chemical raw material synthesis and flow chemical reaction process control, which comprises the following steps: quantitatively and continuously pumping a temperature-regulated sodium nitrite mixed solution into a raw material mixer in a closed-loop automatic control mode through a variable-frequency feeding pump matched with a mass flow meter; synchronously, quantitatively and continuously pumping dimethyl sulfate into the raw material mixer in a closed-loop automatic control manner by matching a feeding pump with a stop valve and a mass flow meter, and uniformly mixing the two raw materials in the raw material mixer according to the stoichiometric molar ratio of the dimethyl sulfate to the sodium nitrite, according to the tandem type segmented design, each reaction kettle can be subjected to customized temperature field control and heat transfer design specially aiming at the special thermodynamic and dynamic requirements of the reaction stage where the reaction kettle is located, the heat transfer efficiency of the whole system is greatly improved, and due to the fact that reaction heat is taken away timely and accurately, the heat transfer efficiency is greatly improved. And a by-product generation path induced by local abnormal high temperature is effectively restrained.

The invention provides a steam turbine generator unit feed pump net positive suction head detection system and method, relates to the technical field of net positive suction detection, and solves the technical problem that net positive suction is difficult to recognize in advance in the prior art. The system specifically comprises a temperature acquisition module used for acquiring the temperature of the deaerator; the judgment and early warning module is used for receiving the flow change rate of the feed pump and triggering alarm when the flow change rate exceeds a flow threshold value; the effective net positive suction head calculation module is used for converting the inlet pressure of the water feeding pump into absolute pressure; temperature correction is conducted on the temperature of the deaerator to obtain the saturation temperature of an inlet of the water feeding pump, the saturation temperature is converted into saturated vapor pressure, and the effective net positive suction head is calculated based on the absolute pressure and the saturated vapor pressure; the necessary net positive suction head obtaining module is used for calling the necessary net positive suction head table and calculating and obtaining the necessary net positive suction head; and the net positive suction head calculation module is used for receiving the effective net positive suction head and the necessary net positive suction head and calculating the net positive suction head. The device is used for detecting the net positive suction head.

The invention belongs to the technical field of heat pump rectification, and particularly relates to a double-effect heat pump rectification system which comprises a first-effect rectification tower feeding pump connected with a preheater, the preheater is connected with a first-effect rectification tower, the first-effect rectification tower is connected with a gas-liquid separator through a screw compressor, and the gas-liquid separator is connected with a tail gas condenser through a second-effect falling film reboiler. The second-effect falling film reboiler is connected with a first-effect reflux discharge pump through a first-effect reflux tank, and the first-effect reflux discharge pump is connected with the preheater; the first-effect rectifying tower is respectively connected with a first-effect falling film reboiler and a first-effect falling film circulating pump; the first-effect rectifying tower is connected with a second-effect rectifying tower through a first-effect tower kettle discharging pump; the first-effect falling film reboiler is connected with a second-effect reflux discharge pump through a second-effect reflux tank; the second-effect falling film reboiler is connected with a second-effect falling film circulating pump and a second-effect rectifying tower, the second-effect falling film reboiler is connected with a second-effect rectifying tower kettle discharging pump through the second-effect rectifying tower, and the second-effect rectifying tower is connected with the first-effect falling film reboiler. According to the invention, double-effect rectification and heat pump rectification are successfully combined, and the cost is low.

The utility model relates to an ammonium phosphate evaporation and concentration system and belongs to the field of chemical engineering. The system comprises a concentrated ammonium phosphate pump, a concentrated ammonium phosphate storage tank, an I-effect evaporation chamber, an I-effect heater, an I-effect circulating pump, an I-effect charging pump, an II-effect evaporation chamber, an II-effect heater, an II-effect circulating pump, an II-effect charging pump, an III-effect evaporation chamber, an III-effect heater and an III-effect circulating pump. By adopting the system and the method, low-pressure saturated live steam is utilized to indirectly heat dilute ammonium phosphate to generate secondary steam and tertiary steam to continuously heat the dilute ammonium phosphate to produce concentrated ammonium phosphate. Compared with a two-effect evaporation concentration process flow which is widely used at present, the three-effect countercurrent evaporation concentration process flow saves energy by 47%. The utility model aims at saving energy, reducing consumption, reducing carbon emission of a production device and protecting the environment.

The invention relates to a modular methanol reforming hydrogen production system, and belongs to the technical field of new energy of methanol reforming hydrogen production. The hydrogen production system comprises a control system, an air inlet module, a methanol supply module, a plurality of methanol reforming hydrogen production modules, a reformed gas main pipeline and a tail gas main pipeline, wherein the methanol reforming hydrogen production module comprises a methanol reformer, a tail gas heat exchanger, a methanol evaporator, a methanol aqueous solution sub-feeding pump, a methanol aqueous solution sub-pipeline, a reformed gas sub-pipeline and a tail gas sub-pipeline; the methanol reformer comprises a vaporizing chamber, an oxidizing chamber and a reforming chamber; an outlet of high-temperature tail gas generated by the oxidizing chamber is connected with the tail gas heat exchanger and the methanol evaporator; and the methanol aqueous solution main storage tank is sequentially connected with the methanol evaporator, the tail gas heat exchanger and the reforming chamber through a methanol aqueous solution feeding pump. The methanol reforming hydrogen production system adopts a modular design, is simple in equipment, high in expansibility, quick to start and adjustable in hydrogen production amount, and realizes instant production and instant use of hydrogen energy and hydrogen.

The utility model discloses a device for continuously producing polyether. The device comprises a mixing kettle, a mixing kettle discharging pump, a receiving tank A, a receiving tank discharging pump A, a PO feeding pump, a static mixer, a pipeline reactor, a reactor discharging pump, an adsorption tower, an adsorption tower discharging pump, a receiving tank B, a receiving tank discharging pump B and a distillation tower, the method comprises the following steps: mixing an alcohol raw material and a catalyst in a mixing kettle, pumping into a receiving tank A for temporary storage, pumping the mixed material in the receiving tank A into a static mixer, mixing with epoxypropane, feeding into a pipeline reactor for reaction, pumping the reaction product in the pipeline reactor into an adsorption tower to remove metal elements introduced by the catalyst, a reaction product in the adsorption tower is pumped into a receiving tank B for temporary storage through an adsorption tower discharging pump, a reaction product in the receiving tank B is pumped into a distillation tower for distillation and purification, and purified polyether is obtained. By adopting the continuous production device, the energy consumption can be reduced, the generation of waste gas, waste residues and waste water is reduced, and the production cost is further reduced.

The utility model belongs to the technical field of feed pump devices, and particularly relates to a novel steam feed pump device which comprises a base, a motor and a pump body, an output shaft of the motor is connected with a flange and is connected with an impeller of the pump body, the top end of the base is vertically connected with a screw, and a protective cover is arranged at the top end of the flange. The protective cover is used for effectively shielding the flange, it is ensured that the flange and a connecting bolt of the flange are not invaded by dust, due to the design, the convenience of dismounting and mounting the flange is remarkably improved during maintenance, the maintenance time is effectively shortened, and then the overall maintenance efficiency of the water feeding pump is improved. In addition, by arranging the cooling fan, the motor and the pump body can be effectively cooled, temperature rise caused by long-time work of the motor and the pump body is prevented, and therefore the service life of the motor and the service life of the pump body are effectively prolonged.

The invention relates to the field of chemical equipment, in particular to a 1-nitroanthraquinone continuous production process based on a dynamic liquid membrane continuous flow reactor, which comprises a solid feeding device, a homogeneous emulsifier, a quenching kettle, a solid-liquid separator, a centrifugal separator and a dynamic liquid membrane reactor, a sulfuric acid storage tank is divided into two branches through a sulfuric acid feeding pump, one branch is connected to the dynamic liquid membrane reactor, the other branch is connected to the dynamic liquid membrane reactor through a flow self-control valve, the quenching kettle is connected to a solid-liquid separator, the solid-liquid separator is divided into two branches, one branch is connected to an anthraquinone crude product storage tank, the other branch is connected to a centrifugal separator, and the other branch is connected to a gas-liquid separator. The centrifugal separator is divided into two branches, one branch is connected to the acid water storage tank, and the other branch is connected to the dichloroethane storage tank, so that the reaction selectivity of the anthraquinone nitration reaction can be effectively improved, high-viscosity solids are prevented from being blocked, and the conversion rate of raw materials in the continuous reaction of the anthraquinone nitration reaction is improved.

This application discloses an acetaldehyde recovery device and method in the production of 1,3-butanediol, belonging to the field of fine chemicals. The device includes: a feed pump, a preheater, a distillation column, a falling film reboiler, a bottom circulating pump, a bottom cooler, a top primary condenser, a reflux ratio distributor, a top secondary condenser, a top product tank, a top transfer tank, a bottom product tank, a bottom transfer tank, a vacuum condenser, a vacuum pump inlet separator, a high vacuum unit, and a vacuum pump outlet separator. The horizontal condenser is directly installed at the top of the distillation column, giving it advantages such as simple structure, convenient operation, low pipeline loss, and high vacuum. A method for acetaldehyde recovery in the production of 1,3-butanediol using this device is also disclosed. Compared to existing technologies, this invention uses falling film evaporation combined with vacuum deep cooling, which avoids the thermal decomposition of 3-hydroxybutyraldehyde and achieves low-temperature, high-efficiency acetaldehyde recovery. It is suitable for continuous production.

The invention relates to a device for increasing the dry matter content of a flowable medium (S), such as sludge, the apparatus comprises a thickener (1) for thickening the medium (S), a feed pump (2) for feeding the medium (S) to the thickener (1), a discharge pump (3) for discharging the thickened medium (T) from the thickener (1), a discharge hopper (4) at the inlet of the discharge pump (3) or between the thickener (1) and the discharge pump (3), and monitoring means for monitoring the performance of the apparatus, the monitoring device at least comprises a feed flow meter (10) for measuring the feed flow from the feed pump (2) to the thickener (1), the monitoring device further comprises means for measuring the time taken to empty the hopper (4) from the first higher level to the second lower level and / or the time taken to fill the hopper (4) from the second lower level to the first higher level (e.g., the downtime of the discharge pump) during operation of the discharge pump (3), and means (18) for calculating the discharge flow rate of the thickener (1) using the measured time and the discharge volume of the hopper (4).

The utility model belongs to the technical field of propylene conveying, and particularly relates to a propylene composite feeding system. The propylene composite feeding system comprises a propylene spherical tank, the bottom of the propylene spherical tank is provided with a pipeline connected with the bottom of a propylene booster, and the top of the propylene booster is provided with a pipeline for refluxing to the propylene spherical tank; a pipeline connected with a propylene feeding pump set is arranged at the bottom of the propylene spherical tank, the propylene feeding pump set is composed of a feeding pump A and a feeding pump B which are connected in parallel, an outlet pipeline of the feeding pump A and an outlet pipeline of the feeding pump B are connected with a propylene conveying pipeline, and the propylene conveying pipeline is used for conveying liquid propylene to a downstream device. The utility model aims to overcome the defects in the prior art, provides the propylene composite feeding system, and saves steam consumption and improves the running stability of the propylene feeding pump set at different seasonal temperatures by combining the booster with the feeding pump set and assisting different feeding pipelines and valves. And the construction and maintenance cost of the production device propylene buffer tank is saved.

The invention discloses a feed pump energy-saving optimization method and system based on variable frequency speed regulation, and relates to the technical field of industrial process control and energy-saving optimization, and the method comprises the steps: constructing a causal analysis model by extracting residual statistical characteristics, recognizing the main drive type of carbon emission change, quantifying the causal effect, and estimating the life loss in combination with sensitivity; energy consumption and service life target weights are dynamically adjusted according to causal labels, a dual-objective optimization function is constructed, a multi-objective genetic algorithm is adopted to determine control parameters of frequency adjustment, and frequency self-adaptive adjustment is achieved. The offset abnormal driving reason is effectively identified, and the accuracy of energy-saving control and the equipment service life management and control capability are improved.

The utility model relates to the technical field of humic acid production, in particular to an efficient feeding device of an acid-containing reaction kettle. The efficient feeding device of the acid-containing reaction kettle comprises a reaction kettle and a premixing kettle, the premixing kettle is connected with the reaction kettle through a feeding pump, the reaction kettle is connected with an acid liquor recovery tank through a primary filter, the acid liquor recovery tank is connected with a liquor preparation tank through a secondary filter, a flushing scraper is arranged in the reaction kettle, and a feeding port is formed in the premixing kettle. According to the device, the premixing kettle and the reaction kettle are reasonably arranged, and structures such as the acid liquor spraying disc are matched, so that the accumulation of acid mist at the feeding hole can be effectively reduced. The acid liquor spraying disc in the premixing kettle can be used for carrying out primary treatment on materials, so that the materials entering the reaction kettle are more uniform, the generation of acid mist is reduced, the problems of low blanking speed and blockage are solved, and the reaction efficiency is improved.

The application belongs to the technical field of salt solution drying, and particularly relates to a continuous evaporation and drying device for triflic acid salt solution. The device comprises a raw material tank, a feeding pump, a recovery cold trap, a vacuum pump, a cyclone separator, two-stage thin film evaporators, a screw conveyor, a material bin and a heat conducting oil furnace, and a continuous material flow path, a gas phase condensation recovery path and a circulating heating path are formed through pipelines. The scheme limits the operation parameters of the two-stage evaporators, such as the operating pressure, temperature and scraper rotating speed, and clearly defines the heat exchange feeding design of the recovery cold trap, the gas velocity of the cyclone separator and the powder backflow structure, is suitable for multiple solvent systems and various corrosion-resistant materials, and the material bin adopts a closed structure with nitrogen protection, and multiple bins can be connected in parallel to switch feeding. The application realizes continuous drying of triflic acid salt, improves production efficiency, product quality and yield, reduces energy consumption and improves solvent recovery rate through waste heat recovery.

This utility model discloses an energy-saving device for nitric acid recovery, including a demineralized water preheater. The outlet of the demineralized water preheater is connected to the inlet of a second demineralized water heater, and the outlet of the second demineralized water heater is connected to the inlet of a nitrogen oxide cooler. It also includes a nitrogen oxide compressor, the outlet of which is connected to the inlet of a first demineralized water heater, and the outlet of the first demineralized water heater is connected to the inlet of a rapid cooler. Furthermore, it includes a demineralized water boiler feed pump, the outlet of which is also connected to the inlet of the first demineralized water heater, the outlet of the first demineralized water heater, and the outlet of the second demineralized water heater, which is also connected to the inlet of the demineralized water preheater. Compared to existing technologies, this utility model adds two demineralized water heaters, recovering heat from nitrogen oxides through demineralized water, reducing the amount of circulating water used, and simultaneously reducing the amount of steam used in the steam drum.

The utility model relates to the technical field of refuse landfill monitoring wells, in particular to sludge separation equipment of a monitoring well, which comprises a base, a sludge suction mechanism is arranged above the base and comprises a mounting plate, the left end of the mounting plate is fixedly connected with the outer wall of a shell through bolts, and the top of the mounting plate is fixedly connected with a feeding pump through bolts. A discharging port of the feeding pump is connected with a discharging pipe, a feeding port of the feeding pump is connected with a feeding pipe, one end of the feeding pipe penetrates through the bottom of the mounting plate and is connected with a telescopic pipe, and the bottom of the mounting plate is fixedly connected with an adjusting air cylinder through bolts. According to the sludge separation equipment for the monitoring well, sewage with sludge in the monitoring well can be sucked out by arranging the sludge suction mechanism, sludge can be deposited at the bottom of the sewage by arranging the sludge barrel, and a user can conveniently separate the sludge from water.

The utility model discloses a skid-mounted ammonia nitrogen wastewater treatment system which comprises a feed pump, a preheater, a kettle liquid pump, an ammonia still, an ammonia water storage tank and an ammonia water pump, the input end of the feed pump is connected with a feed port, the output end of the feed pump is connected with a cold end inlet of the preheater through a pipeline, and a cold end outlet of the preheater is connected with the middle of the ammonia still through a pipeline. A kettle outlet of the ammonia still is connected with a kettle liquid pump through a pipeline, an outlet of the kettle liquid pump is connected with a hot end inlet of a preheater, a hot end outlet of the preheater is connected with a waste liquid discharge port, a middle liquid outlet of the ammonia still is connected with a top liquid inlet of an ammonia water storage tank, and a bottom liquid outlet of the ammonia water storage tank is connected with an ammonia water pump through a pipeline. The system provided by the utility model is arranged on the skid-mounted platform to play a role of convenience in installation, is compact in structural arrangement, short in construction period, flexible in installation and convenient to install, move and transport, preheats raw material liquid by utilizing redundant heat of ammonia distillation kettle liquid, and improves the heat utilization efficiency, so that the efficiency of the device is improved, and the operation energy consumption of the equipment is reduced.

In order to make the two pump units which are generally present in an emptying device for a storage container and which feed in alternating fashion as compact as possible on the one hand and subject to as little wear as possible on the other hand, both pump units are preferably equipped with a feed pump in the form of a diaphragm pump, which is driven by a hydraulically operated working cylinder unit.

The invention relates to sodium silicate production filtering equipment and a method thereof, and belongs to the technical field of filter press equipment and control methods thereof, the sodium silicate production filtering equipment comprises a main body frame, the main body frame comprises two parallel bearing steel beams, and two ends of the bearing steel beams are respectively connected with a head baffle and a tail baffle; the filter plate group is arranged between the two bearing steel beams and can slide along the bearing steel beams; the hydraulic pressing part is mounted on the tail baffle and is used for pushing a pressing plate to apply pressure to the filter plate group; the feeding pipeline is connected to the feeding port of the head baffle, and a feeding pump, an electromagnetic flowmeter and an inlet pressure sensor are sequentially arranged on the feeding pipeline; the pump power monitoring unit is installed on a power supply cable of the feeding pump and used for collecting the working current of a motor, and invalid intervention operation is avoided through an accurate decision-making mechanism.

This utility model belongs to the technical field of MVR evaporators, specifically relating to an MVR evaporation crystallization device. It includes: a forced circulation system, a hydrocyclone, a thickener, and a centrifuge. In the forced circulation system, material sequentially enters a first heater, a circulation pump, a second heater, and a separator through circulation pipes, then returns to the first heater, forming a cycle. The circulation pipes are connected to a feed pump and a discharge pump. The hydrocyclone inlet is connected to the output end of the discharge pump. The hydrocyclone overflow outlet and underflow outlet are respectively connected to a mother liquor tank and a thickener. The thickener's clear liquid overflow outlet and crystal slurry outlet are respectively connected to the mother liquor tank and the centrifuge. The centrifuge's liquid outlet and solid outlet are connected to the mother liquor tank and the outside environment. This utility model achieves equipment compactness through skid-mounted integrated design and process optimization; by using the hydrocyclone for low-concentration material intake, the thickener does not require a large buffer space, further saving space.

The utility model belongs to the technical field of curing treatment, and particularly relates to a gravel slurry curing treatment device. The device comprises a machine frame, a filtering mechanism, an extruding mechanism and a control system, the filtering mechanism, the extruding mechanism and the control system are located on the machine frame, a feeding mechanism is arranged on one side of the machine frame and comprises a feeding pump, a feeding pipeline and a pre-screening device, a flow control valve and a pressure sensor are arranged on the feeding pipeline, and the pre-screening device is arranged on the feeding pipeline. The flow control valve is used for adjusting the feeding flow, the pressure sensor is used for monitoring the feeding pressure in real time and transmitting a pressure signal to the control system, and the pre-screening device is arranged at the front end of the feeding pipeline. According to the utility model, the pre-screening device is arranged to pre-treat gravel slurry and screen gravel particles with different particle sizes, so that the problem that the gravel particles block filter cloth and a feeding channel of the filter press is effectively avoided, the filter pressing efficiency is improved, and the maintenance cost of equipment is reduced.

This utility model belongs to the technical field of feed pumps, specifically relating to a feed device for demineralized water in a polymerization unit. It includes a base, with a feed pump mounted on the upper end of the base. A frequency converter is in contact with the front of the base and electrically connected to the feed pump. A quick-release mechanism is shared between the frequency converter and the base. An air pump is fixedly installed on the inner bottom of the base, with a connecting pipe fixedly connected to its input end. By adding a frequency converter to the base for mounting the feed pump and providing a corresponding quick-release mechanism, the starting current of the feed pump is significantly reduced, resulting in smooth motor operation. Furthermore, the locking pin can be released or secured simply by pushing the push frame, thanks to the snap-fit ​​engagement between the positioning block and the mounting base, combined with the spring reset function of the inclined seat. This convenient and tool-free operation facilitates subsequent maintenance of the frequency converter.

The invention belongs to the field of aviation fuel systems, and provides an integrated multifunctional fuel feed pump with pressure self-sensing and mode self-adaption functions, which comprises an upper pump assembly, a lower pump assembly, a motor controller assembly and a fuel discharge switch assembly, and the upper pump assembly and the lower pump assembly are respectively mounted on the upper side and the lower side of the motor controller assembly; the motor controller assembly provides a power source for the upper pump assembly and the lower pump assembly, the oil drainage switch assembly is installed on a flange plate at the bottom of the lower pump assembly, and the flange plate of the lower pump assembly is installed at the bottom of an oil tank. When the oil liquid completely submerges the oil supply pump, the upper pump assembly and the lower pump assembly simultaneously participate in pressurization work in a self-adaptive manner; when the airplane flies forward and the lower pump assembly is only submerged by oil in the oil tank, the lower pump assembly participates in pressurization work in a self-adaptive manner; when the airplane flies upside down and oil in the oil tank only submerges the upper pump assembly, the upper pump assembly participates in pressurization work in a self-adaptive mode. By means of the built-in pressure sensor, high-precision pressure self-sensing is achieved, and oil supply modes of forward flight and reverse flight of the aircraft are switched and adapted in a self-adaptive mode.

This utility model relates to the technical field of digestion and filtration devices, and proposes an integrated digestion and filtration device, including a digestion mechanism. The digestion mechanism includes an upper cavity and a lower cavity, with a plurality of ultraviolet (UV) digestion lamps fixedly connected between the upper and lower cavities. Each UV digestion lamp is surrounded by a spiral coil, with both ends of the spiral coil connected to the upper and lower cavities, respectively. A mixing component is also installed inside the upper cavity. The upper cavity has a first inlet and a second inlet, with a feed pump connected through the first inlet and a reagent addition pump connected through the second inlet. The upper cavity contains a mixing component for mixing materials and reagents. The lower cavity is connected to a filtration mechanism through a delivery pump. The beneficial effect of this utility model is that by arranging the spiral coil around the UV digestion lamps to form a spiral channel, the irradiation area of ​​the water sample by UV light is significantly increased.

A circulation device (100) for a two-phase cooling system comprises: a liquid feed pump (10); an inlet-side connection part (15) that is in thermal contact with a battery (81) of a moving body (80) and can be attached to and detached from a refrigerant inlet of an evaporator (60) into which flows a liquid-phase refrigerant having a boiling point lower than the usage temperature of the battery (81); an outlet-side connection part (16) that can be attached to and detached from a refrigerant outlet of the evaporator (60); and a phase conversion unit (11) that converts a gas-phase refrigerant flowing out of the evaporator (60) into a liquid phase.

The objective is to provide a fuel supply system that can appropriately control the fuel discharge flow rate of a feed pump. [Solution] A fuel supply system comprising: a feed pump that discharges fuel from a fuel tank to a low-pressure pipe; a port injection valve of an engine to which fuel is supplied from the low-pressure pipe; a pressure regulator that adjusts the fuel pressure of the fuel discharged to the low-pressure pipe so as not to exceed a certain fuel pressure by returning a portion of the fuel discharged to the low-pressure pipe to the fuel tank; and a control device that performs feedforward control of the fuel discharge flow rate of the feed pump using a feedforward term without performing feedback control based on the actual fuel pressure supplied to the port injection valve.

A liquid chromatograph (100) comprises: an analysis column (20) that separates a component to be measured from a sample and that is provided with an inlet (8) which is provided with a filter (8a) and into which the sample flows, a packing material (9) which comes in contact with the sample, and an outlet (10) from which the sample after separation is discharged; a liquid feed pump (3, 4) that feeds a cleaning liquid and a mobile phase to the analysis column (20); and a control device (14) that controls the liquid feed pump (3, 4), wherein the control device (14) controls the feed pump (3, 4) to feed, at a first flow rate, the cleaning liquid mainly to only the filter (8a) from among the filter (8a) and the packing material (9), holds the filter (8a) in the cleaning liquid at a second flow rate smaller than the average flow rate of the first flow rate, for a prescribed period of time, and discharges, from the analysis column (20), the cleaning liquid in which the filter (8a) was held, after the predetermined period of time has elapsed.

The invention relates to the technical field of waste water evaporation drying, in particular to a waste water evaporation drying method and system based on mixed molten salt heat storage, and the system comprises a light condensing and guiding unit, a molten salt heat storage unit, a heat exchange circulation unit and an evaporation drying unit; the light condensing and guiding unit comprises a Fresnel lens and a quartz glass guide tube; the fused salt heat storage unit comprises a fused salt heat storage tank and a fused salt pump, and mixed fused salt is arranged in the fused salt heat storage tank; the heat exchange circulating unit comprises a fused salt steam heat exchanger, a steam heat accumulator, a waste steam tank, a desalted water storage tank, a waste steam water circulating pump, a desalted water feeding pump and a condenser; the evaporation drying unit comprises an evaporation dryer and an evaporation condensate storage tank, the evaporation dryer is communicated with the steam heat accumulator, and the evaporation condensate storage tank is connected with the condenser. The Fresnel lens and the quartz glass guide pipe are combined for light gathering and light guiding, precise tracking and efficient collection of sunlight are achieved in cooperation with the solar tracker, and the heat conduction efficiency is greatly improved.

The utility model provides an automatic water replenishing system of a stacker-reclaimer. The automatic water replenishing system comprises a water tank, a water feeding pump, an electric cabinet, a PLC (Programmable Logic Controller), a Beidou locator, a travelling crane proximity switch and a travelling crane track corrector, the input end of the feed pump is connected with the water tank, and the output end is connected with the dry fog dust suppression terminal box; an ultrasonic liquid level meter and a spring cover plate are mounted on an upper cover of the water tank; a water replenishing pipe is led out from the spring cover plate to the outer side from the water tank; the tail end of the water replenishing pipe is connected with a water supply pipe; a water supply pipe valve is mounted on the water supply pipe; the PLC and the Beidou locator are both arranged in a cab of the stacker-reclaimer crane; the traveling crane proximity switch is mounted on the stacker-reclaimer traveling crane; the crane rail corrector is mounted on the side of a crane rail of the stacker-reclaimer crane; and the travelling crane proximity switch is interlocked with the travelling crane track corrector. The automatic water replenishing device is stable in operation, can achieve the purpose of automatic water replenishing, and can effectively solve the problems of clean water replenishing, winter water replenishing and automatic water replenishing in the background technology.

The invention belongs to the technical field of phosphoric acid extraction, and particularly relates to solid-liquid separation equipment for phosphoric acid extraction and a filtering method thereof.The solid-liquid separation equipment comprises a rack, a liquid collecting barrel, a filtering barrel on the inner side of the liquid collecting barrel, a first spiral conveying assembly in the filtering barrel and a second extrusion filtering mechanism; a first liquid outlet and a flow sensor are arranged at the bottom of the liquid collecting cylinder; the filter cartridge is provided with a filter hole, a liquid level sensor and an air pressure sensor for monitoring the air pressure in the filter cartridge; a first feeding hole and a ventilation hole are formed in the top of the filter cartridge, and the first feeding hole is communicated with a variable-frequency feeding pump; a first deslagging pipe is arranged on the bottom wall of the filter cartridge; a first opening and closing valve for controlling the opening and closing of the first deslagging pipe is arranged on the first deslagging pipe; the controller is electrically connected with the flow sensor, the liquid level sensor, the air pressure sensor, the variable-frequency feeding pump and the alarm device respectively. Whether the filter holes of the filter cartridge are unobstructed or not can be found and handled in time, so that the solid-liquid separation effect and efficiency of phosphoric acid and phosphogypsum are improved, and the utilization rate of production raw materials is improved.